Music is an art form whose medium is sound. Its common elements are pitch (which governs melody and harmony), rhythm (and its associated concepts tempo, meter, and articulation), dynamics, and the sonic qualities of timbre and texture. In its most general form the activities describing music as an art form include the production of works of music, the criticism of music, the study of the history of music, and the aesthetic dissemination of music.A talent show is an event where participants perform talents of singing, dancing, acrobatics, acting, drumming, martial arts, playing an instrument, or other activities to showcase skills. Many talent shows are performances rather than contests, but some are actual contests. In the instance of a contest, participants may be motivated to perform for a reward, trophy, or prize of some kind. For example, a high school might not have many students with any interest in performing in front of the student body for the sole purpose of performing alone and may offer different prizes as an incentive for these students to participate in the contest.